Back to EveryPatent.com
United States Patent | 5,281,891 |
Kaneko ,   et al. | January 25, 1994 |
An electron emission element includes an insulating substrate. A base electrode is formed on the insulating substrate. A plurality of emitters are formed on the base electrode and are arranged radially with respect to a given point. The emitters have wedge shapes with their respective tips facing inward. An insulating layer is formed on the substrate and the base electrode, and is spaced from the wedges of the emitters by given gaps. A control electrode is formed on the insulating layer for enabling electrons to be emitted from the tips of the wedge-shaped emitters.
Inventors: | Kaneko; Akira (Tokyo, JP); Kanno; Toru (Kawasaki, JP); Morishita; Keiko (Kawasaki, JP) |
Assignee: | Matsushita Electric Industrial Co., Ltd. (Osaka, JP) |
Appl. No.: | 836894 |
Filed: | February 19, 1992 |
Feb 22, 1991[JP] | 3-028529 |
Current U.S. Class: | 313/309; 313/336; 313/351 |
Intern'l Class: | H01J 001/02 |
Field of Search: | 313/309,310,336,351 |
4728851 | Mar., 1988 | Lambe | 313/309. |
4827177 | May., 1989 | Lee et al. | 313/309. |
4943343 | Jul., 1990 | Bardai et al. | |
Foreign Patent Documents | |||
0260075 | Mar., 1988 | EP. | |
0434001 | Jun., 1991 | EP. | |
0033833 | Feb., 1989 | JP | 313/336. |
0467526 | Mar., 1992 | JP | 313/309. |
"Observation and Control of Liquid Crystal Molecules by STM" Densoken News No. 493, Feb., 1991. "A Thin-Film Field-Emission Cathode" by C. A. Spindt; Journal of Applied Physics, vol. 39, No. 7 pp. 3504-3505, Dec. 1968. "Field Emission Triodes" by Robert E. Neidert et al.; IEEE Transactions on Electron Devices, vol. 38, No. 3, Mar. 1991, pp. 661-665. "Vacuum Microtriode Characteristics" by W. N. Carr et al.; J. Vac. Sci. Tchnol., A8(4), Jul./Aug. 1990 pp. 3581-3585. "Fabrication and Operation of Silicon Micro-Field-Emitter-Array" by K. Betsui, Autumn Meeting of Japanese Society of Electronics, (1990) Densoken News; Feb. 19, 1992. |